Good examples of .NET (C#) open source projects ported to Java? ( C# -> Java ) [closed]

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I notice several well-known projects in java that were ported to C# .NET. Some examples:

• Hibernate -> NHibernate
• JUnit --> NUnit
• Ant --> NAnt
• Lucene --> Lucene.Net, NLucene
• iText --> iTextSharp
• log4j --> log4net
• Quartz --> Quartz.NET

I was curious about the reverse situation: what are the notable .NET projects that have been ported to the java world?

I looked at the list of projects at 开发者_如何转开发http://csharp-source.net but didn't see any obvious ones.

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From what I know of .net ecosystem, the most missing part seems to be Linq, for which this StackOverflow question provides some infos. In those answers, the most relevant seems to be Quaere.

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JaQu is another example